US5095183A - Gas-blast electrical circuit breaker - Google Patents
Gas-blast electrical circuit breaker Download PDFInfo
- Publication number
- US5095183A US5095183A US07/457,925 US45792589A US5095183A US 5095183 A US5095183 A US 5095183A US 45792589 A US45792589 A US 45792589A US 5095183 A US5095183 A US 5095183A
- Authority
- US
- United States
- Prior art keywords
- casing
- pole
- movable contact
- unit
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
Definitions
- the invention relates to a pole-unit of a medium voltage gas-blast circuit breaker by piston compression of a high dielectric strength gas, notably sulphur hexafluoride, comprising a sealed insulating casing of general cylindrical shape filled with the gas, in which a stationary contact and a movable contact are coaxially arranged, the latter being slidably mounted and bearing a piston, confining, with a transverse subdividing partition of said casing, a compressible volume compressing the puffer gas which blows out the arc drawn when separation of the contacts occurs.
- a high dielectric strength gas notably sulphur hexafluoride
- a gas-blast electrical circuit breaker formed by assembly of several pole-units of the kind mentioned enables medium voltage currents to be broken by simple actuation of an operating shaft.
- Each pole-unit comprises an insulating molded enclosure in the form of a pocket sealed on its open end side by a metal or insulating cover.
- the structure and arrangement of these state-of-the-art pole-units are complicated and require a large assembly and manufacturing time. In particular, guiding the movable contact rod by a series of V-shaped groove rollers is complicated and costly.
- the object of the invention is to achieve a pole-unit with a simplified structure using injected parts, secured by simply clipping them together.
- the pole-unit according to the invention is characterized in that the transverse partition is formed by an insulating injected plastic material part fitted with small clearance and held in place in the casing, the part having a central orifice through which said movable contact passes, guided by the part, and gas flow orifices equipped with one-way valves, to enable the gas to enter the compressible volume freely through said partition, and to prevent the gas escaping from the volume in the opposite direction through the gas flow orifices.
- the injected part constituting the transverse partition which subdivides the casing into two chambers, comprises gas flow orifices open during the pole-unit closing phase, so as not to slow the moving assembly down in its closing movement. These orifices are closed off by an annular disk-shaped valve when the pole-unit opening phase takes place corresponding to compression of the blow-out gas in the compressible volume.
- the annular disk forming the valve is inserted with clearance between the injected part forming the partition and a retaining ring clipped onto this injected part.
- the tightness between the transverse partition and the pole-unit casing is provided by a seal, notably an 0-ring, arranged on the circumference of the injected part and secured by the retaining ring also cooperating with the valve disk.
- the injected part forming the transverse partition can be fitted in the pole-unit via the open end, its immobilization in rotation being performed by a pin sliding in a longitudinal groove arranged in the internal wall of the casing.
- the positioning of the injected part in the longitudinal direction is achieved on the one hand by a cheek arranged on the internal wall of the casing, and on the other hand by a current input insert transversely sunk in the casing and bearing a connecting screw of a braided strip, which protrudes out towards the inside of the casing to act as the retaining stop of the injected part.
- the gas-blast piston securedly united to the movable contact is also made of injected plastic material and bears a puffer nozzle clipped onto the piston.
- a scraper segment in the form of a -split ring is inserted in a circumferential groove of the piston to ensure the tightness between the latter and the pole-unit casing.
- the rigid part forming the intermediate partition performs guiding of the movable contact rod, and the current input to this contact rod is advantageously achieved by a braided strip.
- this braided strip extends in a transverse plane to the pole-unit being connected on the one hand to an insert forming a current bushing, sunk in the insulating casing, and on the other hand to the movable contact rod.
- the connection of the braided strip to the movable contact rod is performed at a point diametrically opposite to the fixing point of the braided strip to the current bushing.
- the braided strip preferably constitutes two current supply loops, symmetrically surrounding the movable contact in such a way as to limit the cross-section of the braided strip.
- the braided strip is preferably subdivided into different strands superposed in the axial direction of the pole-unit, in order to limit its rigidity in this direction. This arrangement of the braided strip in a transverse plane enables the height of the pole-unit to be reduced due to the limiting of the movement of this braided strip.
- the fixing screw of the braided strip to the lateral bushing at the same time performs the longitudinal positioning of the injected part forming the transverse partition.
- the fixing screw of the braided strip to the movable contact rod can at the same time provide the articulation of the connecting rod controlling the movement of the movable contact.
- FIG. 1 is a partially cutaway schematic perspective view, showing a pole-unit according to the invention, represented in the open position;
- FIG. 2 is a sectional view of a gas-blast piston, bearing a nozzle, of the pole-unit according to FIG. 1;
- FIG. 3 is a sectional view on an enlarged scale of the injected part forming a transverse partition according to FIG. 1;
- FIG. 4 is a similar view to that of FIG. 2, showing the nozzle and piston before they are assembled;
- FIG. 5 is a similar view to that of FIG. 3, showing the valve and sealing ring before they are assembled on the injected part;
- FIG. 6 is a half-view according to the arrows F--F of FIG. 5;
- FIG. 7 is a transverse view of the pole-unit according to FIG. 1, at the lateral current bushing level;
- FIGS. 8 and 9 illustrate an alternative embodiment of the nozzle and of the piston, represented respectively before and after their assembly
- FIGS. 10 and 11 are similar views to FIGS. 8 and 9 showing another alternative embodiment
- FIG. 12 is a plane half-view of the nozzle-piston assembly according to FIG. 11.
- a casing 10 of insulating material in the shape of a pocket is tightly sealed on its open end side by a plate 12.
- the enclosure confined by the casing 10 is filled with a high dielectric strength gas, notably sulphur hexafluoride, and two metal inserts are sunk in the wall of the generally cylindrical-shaped casing 10, one insert 14 passing through the base of the pocket constituting the casing 10 and being extended in the axial direction of the casing 10 by a tubular stationary contact 16.
- the other insert 18 extends transversely to the casing 10, being staggered on the cover 12 side.
- the two inserts 14, 18 constitute current bushings forming the input and output of the pole-unit housed in the casing 10.
- the casing 10 has passing through it an operating shaft 20 on which a racking-handle 22 is keyed controlling a connecting rod 24 articulated on a movable contact 26.
- the movable contact 26 bears at its end facing the stationary contact, tulip-finger main contacts 28, and a semi-stationary arcing contact 30 biased by a spring 32 to the protruding position of the tulip-finger main contacts 28.
- the movable contact 26 passes with small clearance through a transverse partition 34 subdividing the casing 10 into two chambers, one chamber for breaking the arc drawn when separation of the contacts 16, 30 occurs, and the other chamber for expansion of the breaking gases.
- the transverse partition 34 confines, with a piston 36 secured to the end of the movable contact 26, a compressible volume achieving, when a pole-unit opening movement occurs, compression of the gas and outflow of this gas from the compressible volume via a blast nozzle 38 fixed to the piston 36. Opening and closing of the pole-unit are controlled by rotation of the operating shaft 20 which brings about sliding of the movable assembly constituted by the movable contact 26 and the piston 36.
- a pole-unit of this kind is well-known to those specialized in the art and it is sufficient to recall that it does not require any external compressed arc blowing gas source, and enables maintenance-free operation for many years, notably without disassembly of the pole-unit.
- the gas-blast piston 36 comprises an injected plastic material part 40 of a general circular shape, presenting on its upper face a cylindrical housing in which the base 42 of the nozzle 38 can engage.
- the nozzle 38 is assembled to the injected part 40 by simple clipping and it is held by retaining hooks 44 coming from injection with the part 40.
- the part 40 comprises orifices 46 via which the inside of the nozzle 38 and the opposite side of the piston 36 communicate.
- the tightness between the piston 36 and the casing 10 is ensured by a scraper seal 48 in the form of a split ring which comes and houses in a circumferential groove 50 of the injected part 40.
- Assembly of the piston 36 is particularly simple, as the scraper seal 48 merely has to be fitted and the nozzle 38 clipped into place. This ease of assembly is due to the possibility of producing suitably shaped parts by injection.
- the transverse partition 34 can be seen subdividing the casing 10 into two chambers.
- the transverse partition 34 is also formed by an injected plastic material part 52 of general cylindrical shape.
- the injected part 52 comprises a central part 54 forming a passing and guiding orifice of the movable contact 26 which passes through it.
- the orifice 54 extends over a certain axial height to ensure proper guiding of the movable contact 26.
- the injected part 52 is extended by a cylindrical skirt 56 following the outlines of the casing 10 with a small clearance to ensure perfect positioning of the transverse partition 34 in the casing 10.
- this injected part 52 is obtained by the penetration of a laterally protruding pin 58, in a conjugate longitudinal groove (not shown) arranged in the internal wall of the casing 10.
- the upper part of the injected part 52 provides an internal circular housing 60 in which a disk-shaped valve 62 is fitted, capable of covering orifices 64 passing through the transverse partition 34.
- a retaining ring 66 can be fitted or possibly clipped into the housing 60 to hold the disk-shaped valve 62.
- the retaining ring 66 presents an external edge 68 which cooperates with a conjugate edge 70 of the injected part 52 to bound a circumferential groove housing an O-ring 72.
- the orifices 64 extend according to arcs of a circle to offer a notable gas flow cross-section while being capable of being sealed off by the disk-shaped valve 62 during the gas compression phase in the compressible volume.
- the electrical connection between the movable contact 26 and the transverse insert 18 is provided by a flexible braided strip 78 extending in the form of two half-loops in a transverse plane to the casing 10 (FIG. 7).
- the two half-loops of the braided strip 78 surround the movable contact rod 26 on both sides, being securedly fixed by one of their ends to the metal insert 18 by a screw which is advantageously the axial positioning screw 76 of the transverse partition 34.
- the opposite end of the half-loops of the flexible braided strip 78 is connected to the movable contact 26 by a screw diametrically opposed to the axial positioning screw 76.
- the flexible braided strip 78 is sufficiently long to extend in proximity to the casing 10 over a sufficient length for axial movement of the movable contact 26.
- the flexible braided strip 78 is made up of several strands superposed in the axial direction of the pole-unit to provide a certain flexibility in this axial direction.
- the flexible braided strip 78 extends appreciably in a diametral plane containing the insert 18, upwards and downwards movement occurring when sliding of the movable contact 26 takes place on either side of this diametral plane.
- the flexible braided strip 78 In the extreme position, the flexible braided strip 78 extends in a slightly inclined plane, the length of this braided strip being sufficient to compensate for the increased distance between the axial positioning screw 76 and connecting screw 80.
- This transverse arrangement of the flexible braided strip 78 limits in height the space necessary to house the flexible braided strip 78, and enables the circuit breaker pole-unit to be shortened.
- the connecting screw 80 of the flexible braided strip 78 to the movable contact 26 advantageously constitutes the fixing and articulation spindle of the rod 24.
- a second screw can be superposed when a braided strip of relatively large height is used.
- Fixing the piston 36 to the movable contact 26 can be accomplished in different ways, a particularly simple way consists of providing on the end of the movable contact 26 an edge onto which the injected part 40 is fitted. Keeping the parts fitted together can be easily achieved by fitting tulip-finger main contacts 28 which extend laterally beyond the movable contact 26 to overlap on the injected part 40. Any other fixing mode can of course be used.
- the absence of any metal parts except for the one through which the current flows enables a better distribution of the field inside the pole-unit to be achieved and the dimensions of the latter to be reduced.
- the injected parts 40, 52 and possibly the scraper seal 48 and the stop ring 66, are for example made of a polycarbonate resin or of any other equivalent material, whereas the nozzle 38 is made of a fluorine polymer, for example polytetrafluorethylene.
- the casing 10 is preferably made in a known manner of epoxy resin.
- FIGS. 8 and 9 illustrate an alternative embodiment of the fixing by clipping the nozzle 38 onto the injected part 40.
- the nozzle 38 has teeth 82 which clip onto bracket-shaped lugs 84 borne by the injected part 40.
- FIGS. 10 to 12 show fixing by means of a ring 88.
- the nozzle 38 bears a circumferential collar 94 in the proximity of its base 42 and the injected part 40 has fixing catches 90 on which the ring 88, which bears against the collar 94, engages and is fixed.
- the ring 88 comprises facing each catch 90, a bayonet orifice 98 whose widened part 96 enables the ring to be fitted onto the catch 90 and whose narrow part is bayonet orifice 98 which enables by pivoting to pass onto the catch 90 and the ring 88 and the nozzle 38, attachment to the injected part 40.
Landscapes
- Circuit Breakers (AREA)
- Breakers (AREA)
Abstract
Description
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8900581A FR2641898B1 (en) | 1989-01-17 | 1989-01-17 | SELF-BLOWING ELECTRIC CIRCUIT BREAKER |
FR8900581 | 1989-01-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
US5095183A true US5095183A (en) | 1992-03-10 |
Family
ID=9377849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/457,925 Expired - Fee Related US5095183A (en) | 1989-01-17 | 1989-12-27 | Gas-blast electrical circuit breaker |
Country Status (11)
Country | Link |
---|---|
US (1) | US5095183A (en) |
EP (1) | EP0378950B1 (en) |
JP (1) | JP3133044B2 (en) |
CN (1) | CN1024970C (en) |
AU (1) | AU626380B2 (en) |
BR (1) | BR9000156A (en) |
CA (1) | CA2006033C (en) |
DE (1) | DE68914819T2 (en) |
ES (1) | ES2055143T3 (en) |
FR (1) | FR2641898B1 (en) |
ZA (1) | ZA9028B (en) |
Cited By (75)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6037555A (en) * | 1999-01-05 | 2000-03-14 | General Electric Company | Rotary contact circuit breaker venting arrangement including current transformer |
US6087913A (en) * | 1998-11-20 | 2000-07-11 | General Electric Company | Circuit breaker mechanism for a rotary contact system |
US6114641A (en) * | 1998-05-29 | 2000-09-05 | General Electric Company | Rotary contact assembly for high ampere-rated circuit breakers |
US6166344A (en) * | 1999-03-23 | 2000-12-26 | General Electric Company | Circuit breaker handle block |
US6172584B1 (en) | 1999-12-20 | 2001-01-09 | General Electric Company | Circuit breaker accessory reset system |
US6175288B1 (en) | 1999-08-27 | 2001-01-16 | General Electric Company | Supplemental trip unit for rotary circuit interrupters |
US6184761B1 (en) | 1999-12-20 | 2001-02-06 | General Electric Company | Circuit breaker rotary contact arrangement |
US6188036B1 (en) | 1999-08-03 | 2001-02-13 | General Electric Company | Bottom vented circuit breaker capable of top down assembly onto equipment |
US6204743B1 (en) | 2000-02-29 | 2001-03-20 | General Electric Company | Dual connector strap for a rotary contact circuit breaker |
US6211757B1 (en) | 2000-03-06 | 2001-04-03 | General Electric Company | Fast acting high force trip actuator |
US6211758B1 (en) | 2000-01-11 | 2001-04-03 | General Electric Company | Circuit breaker accessory gap control mechanism |
US6215379B1 (en) | 1999-12-23 | 2001-04-10 | General Electric Company | Shunt for indirectly heated bimetallic strip |
US6218919B1 (en) | 2000-03-15 | 2001-04-17 | General Electric Company | Circuit breaker latch mechanism with decreased trip time |
US6218917B1 (en) | 1999-07-02 | 2001-04-17 | General Electric Company | Method and arrangement for calibration of circuit breaker thermal trip unit |
US6225881B1 (en) | 1998-04-29 | 2001-05-01 | General Electric Company | Thermal magnetic circuit breaker |
US6229413B1 (en) | 1999-10-19 | 2001-05-08 | General Electric Company | Support of stationary conductors for a circuit breaker |
US6232856B1 (en) | 1999-11-02 | 2001-05-15 | General Electric Company | Magnetic shunt assembly |
US6232859B1 (en) | 2000-03-15 | 2001-05-15 | General Electric Company | Auxiliary switch mounting configuration for use in a molded case circuit breaker |
US6232570B1 (en) | 1999-09-16 | 2001-05-15 | General Electric Company | Arcing contact arrangement |
US6239398B1 (en) | 2000-02-24 | 2001-05-29 | General Electric Company | Cassette assembly with rejection features |
US6239677B1 (en) | 2000-02-10 | 2001-05-29 | General Electric Company | Circuit breaker thermal magnetic trip unit |
US6239395B1 (en) | 1999-10-14 | 2001-05-29 | General Electric Company | Auxiliary position switch assembly for a circuit breaker |
US6252365B1 (en) | 1999-08-17 | 2001-06-26 | General Electric Company | Breaker/starter with auto-configurable trip unit |
US6262872B1 (en) | 1999-06-03 | 2001-07-17 | General Electric Company | Electronic trip unit with user-adjustable sensitivity to current spikes |
US6262642B1 (en) | 1999-11-03 | 2001-07-17 | General Electric Company | Circuit breaker rotary contact arm arrangement |
US6268991B1 (en) | 1999-06-25 | 2001-07-31 | General Electric Company | Method and arrangement for customizing electronic circuit interrupters |
US6281458B1 (en) | 2000-02-24 | 2001-08-28 | General Electric Company | Circuit breaker auxiliary magnetic trip unit with pressure sensitive release |
US6281461B1 (en) | 1999-12-27 | 2001-08-28 | General Electric Company | Circuit breaker rotor assembly having arc prevention structure |
US6300586B1 (en) | 1999-12-09 | 2001-10-09 | General Electric Company | Arc runner retaining feature |
US6310307B1 (en) | 1999-12-17 | 2001-10-30 | General Electric Company | Circuit breaker rotary contact arm arrangement |
US6317018B1 (en) | 1999-10-26 | 2001-11-13 | General Electric Company | Circuit breaker mechanism |
US6326869B1 (en) | 1999-09-23 | 2001-12-04 | General Electric Company | Clapper armature system for a circuit breaker |
US6326868B1 (en) | 1997-07-02 | 2001-12-04 | General Electric Company | Rotary contact assembly for high ampere-rated circuit breaker |
US6340925B1 (en) | 2000-03-01 | 2002-01-22 | General Electric Company | Circuit breaker mechanism tripping cam |
US6346869B1 (en) | 1999-12-28 | 2002-02-12 | General Electric Company | Rating plug for circuit breakers |
US6346868B1 (en) | 2000-03-01 | 2002-02-12 | General Electric Company | Circuit interrupter operating mechanism |
US6362711B1 (en) | 2000-11-10 | 2002-03-26 | General Electric Company | Circuit breaker cover with screw locating feature |
US6366438B1 (en) | 2000-03-06 | 2002-04-02 | General Electric Company | Circuit interrupter rotary contact arm |
US6366188B1 (en) | 2000-03-15 | 2002-04-02 | General Electric Company | Accessory and recess identification system for circuit breakers |
US6373010B1 (en) | 2000-03-17 | 2002-04-16 | General Electric Company | Adjustable energy storage mechanism for a circuit breaker motor operator |
US6373357B1 (en) | 2000-05-16 | 2002-04-16 | General Electric Company | Pressure sensitive trip mechanism for a rotary breaker |
US6377144B1 (en) | 1999-11-03 | 2002-04-23 | General Electric Company | Molded case circuit breaker base and mid-cover assembly |
US6380829B1 (en) | 2000-11-21 | 2002-04-30 | General Electric Company | Motor operator interlock and method for circuit breakers |
US6379196B1 (en) | 2000-03-01 | 2002-04-30 | General Electric Company | Terminal connector for a circuit breaker |
US6388213B1 (en) | 2000-03-17 | 2002-05-14 | General Electric Company | Locking device for molded case circuit breakers |
US6396369B1 (en) | 1999-08-27 | 2002-05-28 | General Electric Company | Rotary contact assembly for high ampere-rated circuit breakers |
US6400245B1 (en) | 2000-10-13 | 2002-06-04 | General Electric Company | Draw out interlock for circuit breakers |
US6404314B1 (en) | 2000-02-29 | 2002-06-11 | General Electric Company | Adjustable trip solenoid |
US6421217B1 (en) | 2000-03-16 | 2002-07-16 | General Electric Company | Circuit breaker accessory reset system |
US6429760B1 (en) | 2000-10-19 | 2002-08-06 | General Electric Company | Cross bar for a conductor in a rotary breaker |
US6429759B1 (en) | 2000-02-14 | 2002-08-06 | General Electric Company | Split and angled contacts |
US6429659B1 (en) | 2000-03-09 | 2002-08-06 | General Electric Company | Connection tester for an electronic trip unit |
US6448522B1 (en) | 2001-01-30 | 2002-09-10 | General Electric Company | Compact high speed motor operator for a circuit breaker |
US6448521B1 (en) | 2000-03-01 | 2002-09-10 | General Electric Company | Blocking apparatus for circuit breaker contact structure |
US6459349B1 (en) | 2000-03-06 | 2002-10-01 | General Electric Company | Circuit breaker comprising a current transformer with a partial air gap |
US6459059B1 (en) | 2000-03-16 | 2002-10-01 | General Electric Company | Return spring for a circuit interrupter operating mechanism |
US6469882B1 (en) | 2001-10-31 | 2002-10-22 | General Electric Company | Current transformer initial condition correction |
US6472620B2 (en) | 2000-03-17 | 2002-10-29 | Ge Power Controls France Sas | Locking arrangement for circuit breaker draw-out mechanism |
US6476335B2 (en) | 2000-03-17 | 2002-11-05 | General Electric Company | Draw-out mechanism for molded case circuit breakers |
US6476698B1 (en) | 2000-03-17 | 2002-11-05 | General Electric Company | Convertible locking arrangement on breakers |
US6476337B2 (en) | 2001-02-26 | 2002-11-05 | General Electric Company | Auxiliary switch actuation arrangement |
US6479774B1 (en) | 2000-03-17 | 2002-11-12 | General Electric Company | High energy closing mechanism for circuit breakers |
US6496347B1 (en) | 2000-03-08 | 2002-12-17 | General Electric Company | System and method for optimization of a circuit breaker mechanism |
US6531941B1 (en) | 2000-10-19 | 2003-03-11 | General Electric Company | Clip for a conductor in a rotary breaker |
US6559743B2 (en) | 2000-03-17 | 2003-05-06 | General Electric Company | Stored energy system for breaker operating mechanism |
US6586693B2 (en) | 2000-03-17 | 2003-07-01 | General Electric Company | Self compensating latch arrangement |
US6639168B1 (en) | 2000-03-17 | 2003-10-28 | General Electric Company | Energy absorbing contact arm stop |
US6678135B2 (en) | 2001-09-12 | 2004-01-13 | General Electric Company | Module plug for an electronic trip unit |
US6710988B1 (en) | 1999-08-17 | 2004-03-23 | General Electric Company | Small-sized industrial rated electric motor starter switch unit |
US20040090293A1 (en) * | 2001-02-27 | 2004-05-13 | Castonguay Roger Neil | Mechanical bell alarm assembly for a circuit breaker |
US6747535B2 (en) | 2000-03-27 | 2004-06-08 | General Electric Company | Precision location system between actuator accessory and mechanism |
US6804101B2 (en) | 2001-11-06 | 2004-10-12 | General Electric Company | Digital rating plug for electronic trip unit in circuit breakers |
US6806800B1 (en) | 2000-10-19 | 2004-10-19 | General Electric Company | Assembly for mounting a motor operator on a circuit breaker |
US8629366B2 (en) | 2009-11-20 | 2014-01-14 | Abb Technology Ag | Medium voltage circuit breaker arrangement |
CN103646820A (en) * | 2013-12-13 | 2014-03-19 | 上海灏赛电器有限公司 | High-voltage directly-operated air-compressing type SF6 load switch device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101504895A (en) * | 2009-01-16 | 2009-08-12 | 北京维益埃电气有限公司 | Novel air pressing type load switching unit |
CN102412070B (en) * | 2011-07-25 | 2014-01-29 | 中国西电电气股份有限公司 | Guide and buffer device of moving contact |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3988554A (en) * | 1974-07-29 | 1976-10-26 | Sprecher & Schuh Ag | Gas-blast switch |
FR2438906A2 (en) * | 1978-10-09 | 1980-05-09 | Merlin Gerin | Circuit breaker with automatic blower - uses gas flow which increases as electrode gap widens adjacent to slotted annular screen |
EP0011542A1 (en) * | 1978-11-14 | 1980-05-28 | Merlin Gerin | Circuit breaker with separated main and shunt current paths |
-
1989
- 1989-01-17 FR FR8900581A patent/FR2641898B1/en not_active Expired - Lifetime
- 1989-12-12 ES ES89420486T patent/ES2055143T3/en not_active Expired - Lifetime
- 1989-12-12 DE DE68914819T patent/DE68914819T2/en not_active Expired - Fee Related
- 1989-12-12 EP EP89420486A patent/EP0378950B1/en not_active Expired - Lifetime
- 1989-12-19 CA CA002006033A patent/CA2006033C/en not_active Expired - Fee Related
- 1989-12-27 US US07/457,925 patent/US5095183A/en not_active Expired - Fee Related
-
1990
- 1990-01-03 ZA ZA9028A patent/ZA9028B/en unknown
- 1990-01-12 JP JP02006041A patent/JP3133044B2/en not_active Expired - Fee Related
- 1990-01-16 BR BR909000156A patent/BR9000156A/en not_active IP Right Cessation
- 1990-01-16 CN CN90100242A patent/CN1024970C/en not_active Expired - Fee Related
- 1990-02-12 AU AU49342/90A patent/AU626380B2/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3988554A (en) * | 1974-07-29 | 1976-10-26 | Sprecher & Schuh Ag | Gas-blast switch |
FR2438906A2 (en) * | 1978-10-09 | 1980-05-09 | Merlin Gerin | Circuit breaker with automatic blower - uses gas flow which increases as electrode gap widens adjacent to slotted annular screen |
EP0011542A1 (en) * | 1978-11-14 | 1980-05-28 | Merlin Gerin | Circuit breaker with separated main and shunt current paths |
Cited By (86)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6326868B1 (en) | 1997-07-02 | 2001-12-04 | General Electric Company | Rotary contact assembly for high ampere-rated circuit breaker |
US6225881B1 (en) | 1998-04-29 | 2001-05-01 | General Electric Company | Thermal magnetic circuit breaker |
US6114641A (en) * | 1998-05-29 | 2000-09-05 | General Electric Company | Rotary contact assembly for high ampere-rated circuit breakers |
US6259048B1 (en) | 1998-05-29 | 2001-07-10 | General Electric Company | Rotary contact assembly for high ampere-rated circuit breakers |
US6087913A (en) * | 1998-11-20 | 2000-07-11 | General Electric Company | Circuit breaker mechanism for a rotary contact system |
US6037555A (en) * | 1999-01-05 | 2000-03-14 | General Electric Company | Rotary contact circuit breaker venting arrangement including current transformer |
US6166344A (en) * | 1999-03-23 | 2000-12-26 | General Electric Company | Circuit breaker handle block |
US6400543B2 (en) | 1999-06-03 | 2002-06-04 | General Electric Company | Electronic trip unit with user-adjustable sensitivity to current spikes |
US6262872B1 (en) | 1999-06-03 | 2001-07-17 | General Electric Company | Electronic trip unit with user-adjustable sensitivity to current spikes |
US6268991B1 (en) | 1999-06-25 | 2001-07-31 | General Electric Company | Method and arrangement for customizing electronic circuit interrupters |
US6218917B1 (en) | 1999-07-02 | 2001-04-17 | General Electric Company | Method and arrangement for calibration of circuit breaker thermal trip unit |
US6188036B1 (en) | 1999-08-03 | 2001-02-13 | General Electric Company | Bottom vented circuit breaker capable of top down assembly onto equipment |
US6710988B1 (en) | 1999-08-17 | 2004-03-23 | General Electric Company | Small-sized industrial rated electric motor starter switch unit |
US6252365B1 (en) | 1999-08-17 | 2001-06-26 | General Electric Company | Breaker/starter with auto-configurable trip unit |
US6396369B1 (en) | 1999-08-27 | 2002-05-28 | General Electric Company | Rotary contact assembly for high ampere-rated circuit breakers |
US6175288B1 (en) | 1999-08-27 | 2001-01-16 | General Electric Company | Supplemental trip unit for rotary circuit interrupters |
US6232570B1 (en) | 1999-09-16 | 2001-05-15 | General Electric Company | Arcing contact arrangement |
US6326869B1 (en) | 1999-09-23 | 2001-12-04 | General Electric Company | Clapper armature system for a circuit breaker |
US6239395B1 (en) | 1999-10-14 | 2001-05-29 | General Electric Company | Auxiliary position switch assembly for a circuit breaker |
US6229413B1 (en) | 1999-10-19 | 2001-05-08 | General Electric Company | Support of stationary conductors for a circuit breaker |
US6317018B1 (en) | 1999-10-26 | 2001-11-13 | General Electric Company | Circuit breaker mechanism |
US6232856B1 (en) | 1999-11-02 | 2001-05-15 | General Electric Company | Magnetic shunt assembly |
US6377144B1 (en) | 1999-11-03 | 2002-04-23 | General Electric Company | Molded case circuit breaker base and mid-cover assembly |
US6262642B1 (en) | 1999-11-03 | 2001-07-17 | General Electric Company | Circuit breaker rotary contact arm arrangement |
US6300586B1 (en) | 1999-12-09 | 2001-10-09 | General Electric Company | Arc runner retaining feature |
US6310307B1 (en) | 1999-12-17 | 2001-10-30 | General Electric Company | Circuit breaker rotary contact arm arrangement |
US6172584B1 (en) | 1999-12-20 | 2001-01-09 | General Electric Company | Circuit breaker accessory reset system |
US6184761B1 (en) | 1999-12-20 | 2001-02-06 | General Electric Company | Circuit breaker rotary contact arrangement |
US6215379B1 (en) | 1999-12-23 | 2001-04-10 | General Electric Company | Shunt for indirectly heated bimetallic strip |
US6281461B1 (en) | 1999-12-27 | 2001-08-28 | General Electric Company | Circuit breaker rotor assembly having arc prevention structure |
US6346869B1 (en) | 1999-12-28 | 2002-02-12 | General Electric Company | Rating plug for circuit breakers |
US6211758B1 (en) | 2000-01-11 | 2001-04-03 | General Electric Company | Circuit breaker accessory gap control mechanism |
US6239677B1 (en) | 2000-02-10 | 2001-05-29 | General Electric Company | Circuit breaker thermal magnetic trip unit |
US6429759B1 (en) | 2000-02-14 | 2002-08-06 | General Electric Company | Split and angled contacts |
US6239398B1 (en) | 2000-02-24 | 2001-05-29 | General Electric Company | Cassette assembly with rejection features |
US6313425B1 (en) | 2000-02-24 | 2001-11-06 | General Electric Company | Cassette assembly with rejection features |
US6281458B1 (en) | 2000-02-24 | 2001-08-28 | General Electric Company | Circuit breaker auxiliary magnetic trip unit with pressure sensitive release |
US6204743B1 (en) | 2000-02-29 | 2001-03-20 | General Electric Company | Dual connector strap for a rotary contact circuit breaker |
US6724286B2 (en) | 2000-02-29 | 2004-04-20 | General Electric Company | Adjustable trip solenoid |
US6404314B1 (en) | 2000-02-29 | 2002-06-11 | General Electric Company | Adjustable trip solenoid |
US6388547B1 (en) | 2000-03-01 | 2002-05-14 | General Electric Company | Circuit interrupter operating mechanism |
US6466117B2 (en) | 2000-03-01 | 2002-10-15 | General Electric Company | Circuit interrupter operating mechanism |
US6448521B1 (en) | 2000-03-01 | 2002-09-10 | General Electric Company | Blocking apparatus for circuit breaker contact structure |
US6340925B1 (en) | 2000-03-01 | 2002-01-22 | General Electric Company | Circuit breaker mechanism tripping cam |
US6590482B2 (en) | 2000-03-01 | 2003-07-08 | General Electric Company | Circuit breaker mechanism tripping cam |
US6379196B1 (en) | 2000-03-01 | 2002-04-30 | General Electric Company | Terminal connector for a circuit breaker |
US6346868B1 (en) | 2000-03-01 | 2002-02-12 | General Electric Company | Circuit interrupter operating mechanism |
US6366438B1 (en) | 2000-03-06 | 2002-04-02 | General Electric Company | Circuit interrupter rotary contact arm |
US6211757B1 (en) | 2000-03-06 | 2001-04-03 | General Electric Company | Fast acting high force trip actuator |
US6459349B1 (en) | 2000-03-06 | 2002-10-01 | General Electric Company | Circuit breaker comprising a current transformer with a partial air gap |
US6496347B1 (en) | 2000-03-08 | 2002-12-17 | General Electric Company | System and method for optimization of a circuit breaker mechanism |
US6534991B2 (en) | 2000-03-09 | 2003-03-18 | General Electric Company | Connection tester for an electronic trip unit |
US6429659B1 (en) | 2000-03-09 | 2002-08-06 | General Electric Company | Connection tester for an electronic trip unit |
US6218919B1 (en) | 2000-03-15 | 2001-04-17 | General Electric Company | Circuit breaker latch mechanism with decreased trip time |
US6366188B1 (en) | 2000-03-15 | 2002-04-02 | General Electric Company | Accessory and recess identification system for circuit breakers |
US6232859B1 (en) | 2000-03-15 | 2001-05-15 | General Electric Company | Auxiliary switch mounting configuration for use in a molded case circuit breaker |
US6421217B1 (en) | 2000-03-16 | 2002-07-16 | General Electric Company | Circuit breaker accessory reset system |
US6459059B1 (en) | 2000-03-16 | 2002-10-01 | General Electric Company | Return spring for a circuit interrupter operating mechanism |
US6373010B1 (en) | 2000-03-17 | 2002-04-16 | General Electric Company | Adjustable energy storage mechanism for a circuit breaker motor operator |
US6388213B1 (en) | 2000-03-17 | 2002-05-14 | General Electric Company | Locking device for molded case circuit breakers |
US6586693B2 (en) | 2000-03-17 | 2003-07-01 | General Electric Company | Self compensating latch arrangement |
US6559743B2 (en) | 2000-03-17 | 2003-05-06 | General Electric Company | Stored energy system for breaker operating mechanism |
US6472620B2 (en) | 2000-03-17 | 2002-10-29 | Ge Power Controls France Sas | Locking arrangement for circuit breaker draw-out mechanism |
US6476335B2 (en) | 2000-03-17 | 2002-11-05 | General Electric Company | Draw-out mechanism for molded case circuit breakers |
US6476698B1 (en) | 2000-03-17 | 2002-11-05 | General Electric Company | Convertible locking arrangement on breakers |
US6639168B1 (en) | 2000-03-17 | 2003-10-28 | General Electric Company | Energy absorbing contact arm stop |
US6479774B1 (en) | 2000-03-17 | 2002-11-12 | General Electric Company | High energy closing mechanism for circuit breakers |
US6747535B2 (en) | 2000-03-27 | 2004-06-08 | General Electric Company | Precision location system between actuator accessory and mechanism |
US6373357B1 (en) | 2000-05-16 | 2002-04-16 | General Electric Company | Pressure sensitive trip mechanism for a rotary breaker |
US6400245B1 (en) | 2000-10-13 | 2002-06-04 | General Electric Company | Draw out interlock for circuit breakers |
US6531941B1 (en) | 2000-10-19 | 2003-03-11 | General Electric Company | Clip for a conductor in a rotary breaker |
US6806800B1 (en) | 2000-10-19 | 2004-10-19 | General Electric Company | Assembly for mounting a motor operator on a circuit breaker |
US6429760B1 (en) | 2000-10-19 | 2002-08-06 | General Electric Company | Cross bar for a conductor in a rotary breaker |
US6362711B1 (en) | 2000-11-10 | 2002-03-26 | General Electric Company | Circuit breaker cover with screw locating feature |
US6380829B1 (en) | 2000-11-21 | 2002-04-30 | General Electric Company | Motor operator interlock and method for circuit breakers |
US6448522B1 (en) | 2001-01-30 | 2002-09-10 | General Electric Company | Compact high speed motor operator for a circuit breaker |
US6476337B2 (en) | 2001-02-26 | 2002-11-05 | General Electric Company | Auxiliary switch actuation arrangement |
US20040090293A1 (en) * | 2001-02-27 | 2004-05-13 | Castonguay Roger Neil | Mechanical bell alarm assembly for a circuit breaker |
US6882258B2 (en) | 2001-02-27 | 2005-04-19 | General Electric Company | Mechanical bell alarm assembly for a circuit breaker |
US6678135B2 (en) | 2001-09-12 | 2004-01-13 | General Electric Company | Module plug for an electronic trip unit |
US20040066595A1 (en) * | 2001-09-12 | 2004-04-08 | Tignor Michael S. | Method and apparatus for accessing and activating accessory functions of electronic circuit breakers |
US7301742B2 (en) | 2001-09-12 | 2007-11-27 | General Electric Company | Method and apparatus for accessing and activating accessory functions of electronic circuit breakers |
US6469882B1 (en) | 2001-10-31 | 2002-10-22 | General Electric Company | Current transformer initial condition correction |
US6804101B2 (en) | 2001-11-06 | 2004-10-12 | General Electric Company | Digital rating plug for electronic trip unit in circuit breakers |
US8629366B2 (en) | 2009-11-20 | 2014-01-14 | Abb Technology Ag | Medium voltage circuit breaker arrangement |
CN103646820A (en) * | 2013-12-13 | 2014-03-19 | 上海灏赛电器有限公司 | High-voltage directly-operated air-compressing type SF6 load switch device |
Also Published As
Publication number | Publication date |
---|---|
CA2006033A1 (en) | 1990-07-17 |
JP3133044B2 (en) | 2001-02-05 |
AU4934290A (en) | 1991-08-29 |
EP0378950B1 (en) | 1994-04-20 |
BR9000156A (en) | 1990-10-23 |
ES2055143T3 (en) | 1994-08-16 |
FR2641898A1 (en) | 1990-07-20 |
JPH02227924A (en) | 1990-09-11 |
CA2006033C (en) | 1999-11-02 |
CN1024970C (en) | 1994-06-08 |
CN1044361A (en) | 1990-08-01 |
FR2641898B1 (en) | 1991-03-15 |
DE68914819T2 (en) | 1994-10-27 |
AU626380B2 (en) | 1992-07-30 |
ZA9028B (en) | 1990-09-26 |
DE68914819D1 (en) | 1994-05-26 |
EP0378950A1 (en) | 1990-07-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5095183A (en) | Gas-blast electrical circuit breaker | |
US3839613A (en) | Puffer type circuit breaker | |
KR0155551B1 (en) | Gas circuit breaker | |
CA1129916A (en) | Double-flow puffer-type compressed-gas circuit-interrupter | |
US3940583A (en) | Arc quenching arrangement | |
CN211350462U (en) | Arc extinguishing type high-voltage switch device | |
US5072084A (en) | Gas circuit breaker | |
US3733452A (en) | Pressure equalization means between compartments in a puffer circuit interrupter | |
CA1073018A (en) | Puffer-type gas-blast circuit breaker | |
US3906180A (en) | Gas-blast switch | |
US4945198A (en) | High tension circuit breaker with low operating energy | |
US5231256A (en) | Puffer type gas-insulated circuit breaker | |
US4945197A (en) | High tension circuit breaker including a dielectric gas used for blasting | |
ATE98812T1 (en) | HIGH VOLTAGE GAS SWITCH. | |
US4289942A (en) | Gas-blast circuit-interrupter with multiple insulating arc-shield construction | |
US6018133A (en) | Low-compression puffer circuit-breaker | |
US4562321A (en) | Guiding assembly for a high-voltage circuit-breaker operating rod | |
US4431886A (en) | Circuit-breaker | |
JP2562086B2 (en) | Medium voltage circuit breaker with terminal arc contacts | |
US4139751A (en) | Puffer-type compressed-gas circuit interrupter | |
US2897324A (en) | Fluid blast circuit interrupter | |
US5258589A (en) | High- and medium-voltage circuit breaker with lower operating energy | |
US4426561A (en) | Puffer-type compressed-gas circuit-interrupter | |
US5248862A (en) | Gas-blast circuit breaker | |
US4491706A (en) | Circuit breaker with means for producing a flow of arc-extinguishing gas |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GERIN, MERLIN,, FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:RAPHARD, DENIS;PERRIN, MAURICE;BESNARD, LAURENT;AND OTHERS;REEL/FRAME:005205/0464 Effective date: 19891128 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20040310 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |